A nondoped-type small molecule white organic light-emitting device
Authors:
- Wenfa XieWXWenfa Xie
- Shiyong LiuSLShiyong Liu
- Yi ZhaoYZYi Zhao
- 15 May 2003
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 36 (11) , 1246-1248
Abstract
We fabricated a small molecule nondoped white organic light-emitting device whose structure included indium tin oxide glass substrate/50 nm N, N'-bis-(1-naphthyl)-N, N'-diphenyl-1,1'-biphenyl-4,4'-diamine hole transporting layer/0.05 nm 4-(dicyano-methylene)-2-methyl-6-(p-dimethyl aminostyryl)-4H-pyran/25 nm 4,4'-bis(2,2' diphenyl vinyl)-1,1'-biphenyl/15 nm tris(8-hydroxyquinoline) aluminium electron transporting layer/0.5 nm lithium fluoride/aluminium. It showed a maximum power efficiency of 1.74 lm W−1 at 6 V (the brightness is 125 cd m−2 and the CIE 1931 chromaticity coordinates are (0.34, 0.36)). Its brightness reaches 3750 cd m−2 at 15 V. And the chromaticity coordinates, varying from (0.36, 0.38) to (0.30, 0.32) with increasing forward bias from 4 to 15 V, are well within the white region.Keywords
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